module.exports = function(sequelize, DataTypes) {
  const grades = sequelize.define(
    'grades',
    {
      id: {
        type: DataTypes.UUID,
        defaultValue: DataTypes.UUIDV4,
        primaryKey: true,
      },

nome: {
        type: DataTypes.TEXT,
      
      

      },

ordem: {
        type: DataTypes.INTEGER,
      
      

      },

nivel: {
        type: DataTypes.ENUM,
      
      

        values: [

"primario",


"i_ciclo",


"ii_ciclo",


"medio",


"superior",


"outro"

        ],

      },

      importHash: {
        type: DataTypes.STRING(255),
        allowNull: true,
        unique: true,
      },
    },
    {
      timestamps: true,
      paranoid: true,
      freezeTableName: true,
    },
  );

  grades.associate = (db) => {


/// loop through entities and it's fields, and if ref === current e[name] and create relation has many on parent entity












    db.grades.hasMany(db.classes, {
      as: 'classes_grade',
      foreignKey: {
          name: 'gradeId',
      },
      constraints: false,
    });













//end loop



    db.grades.belongsTo(db.schools, {
      as: 'school',
      foreignKey: {
        name: 'schoolId',
      },
      constraints: false,
    });




    db.grades.belongsTo(db.users, {
      as: 'createdBy',
    });

    db.grades.belongsTo(db.users, {
      as: 'updatedBy',
    });
  };



  return grades;
};